...Laser heads can produce dot sizes of 60μm whereas Oki Digital LED technology can produce dots as small as 34μm ... But have been pioneering the use of Digital LED technology in printing devices for many years! ... Do you like what you see?Laser heads can produce dot sizes of 60μm whereas Oki Digital LED technology can produce dots as small as 34μm ... But have been pioneering the use of Digital LED technology in printing devices for many years! ... Do you like what you see?Laser heads can produce dot sizes of 60μm whereas Oki Digital LED technology can produce dots as small as 34μm ... But have been pioneering the use of Digital LED technology in printing devices for many years! ... Do you like what you see?Laser heads can produce dot sizes of 60μm whereas Oki Digital LED technology can produce dots as small as 34μm ... But have been pioneering the use of Digital LED technology in printing devices for many years! ... Do you like what you see?Laser heads can produce dot sizes of 60μm whereas Oki Digital LED technology can produce dots as small as 34μm ... But have been pioneering the use of Digital LED technology in printing devices for many years! ... Do you like what you see?Laser heads can produce dot sizes of 60μm whereas Oki Digital LED technology can produce dots as small as 34μm ... But have been pioneering the use of Digital LED technology in printing devices for many years! ... Do you like what you see?Laser heads can produce dot sizes of 60μm whereas Oki Digital LED technology...
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...Mars Since the beginning of time, people have looked at a red dot in the sky we call Mars. In the past few generations, humans have been learning more and more about this red dot, Mars. Thousands of years ago, the ancient Romans looked up at the sky and saw this little red dot. The Romans named this planet Mars after the Roman god of war. They named it this because it reminded them of blood, and blood made them think of the roman god of war, Mars. Mars is the 4th planet from the sun, right after Earth. The average temperature on Mars is -81 degrees fahrenheit and -60 degrees celsius. A day on Mars is 24 hours and 37 minutes long. A year on Mars is 687 earth days. That means that it takes Mars about twice as long as Earth to orbit the sun....
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...Science of Sunlight and Stars SCI/151 May 16, 2011 Troy Mazely Science of Sunlight and Stars Light is used in many ways, and is a form of energy that can be created, travel through space, and be absorbed. Light can react as a particle, because it sends all its energy to one place. A particle of light is called a photon. Photons can be absorbed into objects, bounce off objects, or fly through space. Over the course of a million years, clumps of particles will grow into what is called a “protostar” and draw in more gases and grow even hotter. This is how stars are formed and is a point in a star’s life. Astronomers determine composition, temperature, speed, and rotation rate of distant objects with a tool called a spectroscopy. When a star gives off light and the light splits by prism, the spectral pattern reflects a star’s composition. All stars are 95% hydrogen, so the variations in composition expose its age, luminosity, and origin. Composition of ages can be determined by observing the light of a star. The temperature of a star can be determined from its color and its spectrum. All stars have different colors because of its light radiation. Another way to determine the temperature of a star is to examine the spectral lines in the starlight. “Because we sometimes describe light as an electromagnetic wave, the complete spectrum of light is usually called the electromagnetic spectrum” (Bennett, Donahue, Schneider, and Voit, 2009). This is used to explain all types...
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...Observing Surface Features of the Sun for Amateur Astronomers Nikhil Anand Mustafa Shahid B.Tech Aerospace Engineering, IV Sem Indian Institute of Space Science and Technology Email: nikhil.myindia@gmail.com B.Tech Avioncs, IV Sem Indian Institute of Space Science and Technology Email: mustafashahid4@googlemail.com Abstract—Viewing the sun through a telescope is a very underrated astronomical practice. This paper will focus in detail on the relevance and significance of observing the sun. The various features on the sun are explained along with appropriate methodologies for safely viewing them. Three techniques are deployed to safely observe the sun. Further scope and interpretations of this experiment are also discussed. I. I NTRODUCTION Looking at the sun with naked eyes can be extremely dangerous, but with the right equipment, several interesting features of the sun can be revealed. Some of the notable features include sunspots, granulation and corona of the sun. To view the surface, three techniques are used. each has its own advantage. A. Surface features 1) Sun Spots : Sunspots are temporary phenomena on the photosphere of the Sun that appear visibly as dark spots on the surface. They correspond to concentrations of magnetic field that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere. Sunspots usually appear as pairs, with each spot having the opposite magnetic polarity of the other...
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...help Earth to fully breathe again. The film mainly discussed what is Global Warming? How it occur? Why is it happening? What are the possible problems that we will encounter? What can be the possible solutions to the said event? Based on the film, Global Warming is the increase in the average temperature of Earth’s atmosphere. This is because of the heat also known as the “Infrared Rays” from the Sun which cannot rise up to the space. This happens because the atmosphere is blocked with Carbon Dioxide CO2 that prevents the heat to come out. Carbon Dioxide from vehicles, factories, and the like produces more and more elements that trap the heat that causes “Greenhouse Effect”. Generally, from the First World countries are likely the mostly affected of this catastrophe. But every human must be aware of. The film illustrates Global Warming well with a short cartoon clip that includes Mr. Sun Rays as the infrared rays from the sun which loves to visit Earth. The Green Goons as the Carbon Dioxide which prevents Mr. Sun Rays to get out of the Earth’s atmosphere. Until other ‘Mr. Sun Rays’ were trapped in the Earth’s atmosphere. Also, the documentary showed that Global Warming is really happening and gets worst each year through a graph which illustrates the constant rise in level of carbon dioxide and temperature. Additionally, the film portrays moral lessons. Al Gore also stated that Global Warming should be considered as a moral obligations rather than an extreme climate change...
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...top of the flat map but the area is flattened and wider 14. On top of the globe, small dot 15. Because it could not be accurately represented on the flat map due to flattening and dimensions. 16. No they do not. 17. North Celestial Pole (Ursa Minor), +89 15’50.8 18. RA: 5h 55m 10s DEC: 7 degrees 24.426’ RA: 5h 14m 32s DEC: -08 degrees 12’5.89’ 19. Left, the equatorial system is nearly the same just mirrored 20.Ecliptic Location: Winter Solstice Approximate date: Sept 22 RA: 0h, 6h, 12h, 18h DEC: 0, 23.45, 0, -23.45 21. The ecliptic is slightly above the celestial equator and crosses at the vernal equinox. The right ascension on the equinox increases by 1h,2h,3h while the ecliptic moves by degrees 15,30,45 etc. 22. RA: 21.3h, 23.9, 2.9, 8.2, 9.2, 12.1, 1.9, 18.1 DEC: -15.8, 0.0, 20.0, 16.3, -0.6, -16.6, -23.4 Latitude of most direct: 15.8, 0.0, 16.5, 23.2, 16.2, 0.0, 16.6, 23.5 Latitude of least direct ray: 74.1 N, 90 N, 66.5 S, 73.9 S, 90 N, 73.6 N, 66.4 N 23. DEC is approximately equal to the latitude of the most direct ray and negative DEC corresponds to south latitudes. 24. The tropic of Cancer is the northernmost point on Earth where the sun’s rays can appear directly overhead at noon. The tropic of Capricorn is the southernmost point where the sun’s rays and appear directly overhead at noon. The tropics do not experience seasons because they receive nearly direct sun rays year round. 25. Some days have 24 hours of sunlight and 24 hours of darkness. 26...
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...By mid-October, I doubted much vibrant foliage would remain on the trees outside of the valley. My drive up to Piñon Mesa seemed to confirm this assumption. Dusty aspens, all completely barren, lined the dirt road leading to Turkey Flats, the trail I planned on hiking. Crows squawked overhead as they flew from pine tree to pine tree. Stepping outside at the trailhead, I looked down to see limp brown leaves and sparse tall grasses spreading across all of the ground I could see. However, as I started walking into the forest, the brown leaves on the ground gradually had a growing number yellow leaves amongst them like bold polka dots. I was shocked; the hills looked lifeless from the road that lead me there. Looking ahead among pines were aspens...
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...mosJessica Lorge Cosmos 11 April 2012 The Pale Blue Dot Carl Sagan puts it perfectly, Earth which has and will consist of everything and everyone we will ever directly know is on this mote of dust suspended in a sunbeam. How does one look at the world once we realize our position in regards to the whole universe? I thought there were so many people on this Earth but that everything that goes on in my one life was important....but once I saw how large the universe is and started considering my position I feel smaller and smaller. The Sun is one hundred and fifty million kilometers from Earth and the Sun is one million times the size of Earth. There is still light traveling to Earth set out by galaxies billions of years ago. There are approximately seven billion people on this planet. Do you feel small yet? For a long time not a lot of people considered how small the Earth was in comparison to the whole universe, and for those who did, they did not take into consideration the significance of our planet or lack thereof because the churches controlled basic human thought. The idea that human's on Earth were not at the center of the universe and the most important thing out there when we began discovering sunspots, irregular orbit patters of planets and moons, and that the planets did not revolve around the Earth. It's interesting how we as human's think that we are the basis for reality and that everything revolves around us. Why do we think that the natural world and universe...
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...The sun beat down on the salty, turquoise waters. The day was like any other. I could feel the breeze running over my heads and I could hear the constant singing of the gulls. I am Scylla. I live in a cave in the Strait of Messina. Before, I was a beautiful nymph. Then that cursed witch Circe transformed me into this horrible, six-headed beast over a dispute, some 100 years ago. She ruined my life forever. To this day, I still hate her for all of the pain and suffering that she caused me. Just as my stomach rumbled with hunger, I saw a dot on the horizon. As it got closer, I could make out a ship. “Finally, this will be my first meal in weeks”, I thought as I stretched my necks, preparing for the hunt. Every ship that passed through this strait...
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...Every culture known to history and folklore has seen in the heavens distinctive patterns, called constellations, and formed by the stars. Constellations are usually consist of bright stars that appear close to each other. Oriental cultures formed complicated patterns from some of the faintest stars, creating hundreds of constellations. "Constellation" is the name we give to seeming patterns of stars in the night sky. "Stella" is the Latin word for star and a constellation is a grouping of stars. In general, the stars in these groups are not actually close to each other in space, they just appear to be close when viewed from Earth. Constellations are named patterns of stars. All societies created them. The classical ancient constellations that populate our sky began in the lands of the middle-east thousands of years ago, their origins largely lost to time. They passed through the hands of the ancient Greeks, who covered them with their legends and summarized them in story and verse. During Roman times they were assigned Latin names. The ancient constellations limit out only the bright patterns. From around 1600s to 1800s, astronomers invented a large group of "modern" constellations from the faint stars that rest between the classical figures, from pieces of ancient constellations, and from the stars that occupy the part of the southern sky that could not be seen from classical lands. The patterns they imagined are the constellations. Today, it can be difficult to make out...
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...something wasn’t quiet right with the boy when it began to rain on another Tuesday morning in December. As it rained the house shook with chaos unseen by the liked of him. His foster parents were fighting, and yelling yet somehow it seemed to be about nothing. When the rained stop his foster parents stopped yelling, and began to wonder why they were fighting in the first place. This occurred several times and each time, right on the dot there was a storm brewing. Eventually the boy turned into a teenager, having the world hit him a lot harder than most. On his rainy Mondays the boys decided to beat him to a pulp, and on a snowing Friday everyone was cold to him being distant. After he realized people weren’t ever going to like him he made a new obsession with the weather. He began to see correlations on his bad days vs. his good days. He was pulling it together, but then he realized what good would it do him to know why he had these issues. He collected his things of all he knew and put it in a box never to be thought of again. Present Day The sun was materializing sluggishly as I rose out of my ordinary silvery bed to organize myself for work, and progress through the day-to-day sequence. It seemed to be a never-ending cycle that went about like a carousel making me want to eject myself so it might stop. Yet, somehow I didn’t want to do this because of stress, but the lack there of. My existence seems to be but a mind-numbing goose chase. The goose I am chasing is my ambition...
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...Introduction Nanoleaf technology is an inventive method of green energy collection, combining the conversion of light, heat and wind power. Integrated nanotechnologies enable the nanoleaves to convert solar radiation (light & heat) into electricity. Furthermore, the leaf petiole or the stem, and twigs comprise nano-piezovoltaic material -- these tiny generators produce electricity from movement or kinetic energy caused by wind or falling raindrops. A fundamental flaw in conventional solar cells is that electrons give too much energy by sunlight and lose that energy in heat form, as the electrons move thermally to the bottom of the conduction band. Solar Botanic "hot carrier" solar cells would use quantum dots (i.e., nano-particles) to confine electrons long enough so that they could be extracted before their energy dissipates as heat. With this process of combining the conversion of light, heat and wind, more energy is generated, as the "hot carrier" can now be efficiently used with the implementation of thermo-voltaic cells. The design of the nanoleaves is based on the principles of photosynthesis, a natural process where plants extract the light from solar energy, and along with CO2 from the atmosphere, convert it to starches and oxygen, the oxygen being emitted to the atmosphere. However, nanoleaves development has gone a step further, in that they are capable of harvesting the thermal and light energy from the sun’s energy and convert it to electricity. The stems...
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...10/25/2013 Department of Physics | Loyola College | JOURNAL | PHYSICA | JOURNAL | PHYSICA | CONTNETS * About college * About physics department * Students club * Science news * Science facts * Picture of the day * Puzzle * Riddle ABOUT COLLEGE Glorious college: Loyola College Loyola College was founded by the Society of Jesus (Jesuits) in 1925, with the primary objective of providing University Education in a Christian atmosphere for deserving Students, especially those belonging to the Catholic Community. Although this college is meant primarily for Catholics, it admits other students irrespective of caste and creed. The College aims at training young men and women of quality to be leaders in all walks of life, whom we hope will play a vital role in bringing about the desired changes for the betterment of the people of our country, more particularly of the dalits and other poorer and marginalized sections of society. The College trains young men and women to serve their fellowmen in justice, truth and love. Loyola College became autonomous in July 1978. The College, however, continues to be affiliated to the University of Madras and is autonomous, in the sense that it is free to frame its own course of studies and adopt innovative methods of teaching and evaluation. The University degrees will be conferred on the students passing the examinations conducted by the college. In Loyola, we look at education differently...
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...gas. * Our solar system consists of _________. * the Sun and all the objects that orbit it * A typical galaxy is a _________. * collection of a few hundred million to a trillion or more stars, bound together by gravity * Which of the following best describes what we mean by the universe? * The sum total of all matter and energy * What do astronomers mean by the Big Bang? * The event that marked the beginning of the expansion of the universe * What do we mean when we say that the universe is expanding? * Average distances between galaxies are increasing with time. * Based on observations of the universal expansion, the age of the universe is about _________. * 14 billion years * A television advertisement claiming that a product is light-years ahead of its time does not make sense because _________. * it uses "light-years" to talk about time, but a light-year is a unit of distance * The term observable universe refers to _________. * that portion of the universe that we can see in principle, given the current age of the universe * On a scale in which the distance from Earth to the Sun is about 15 meters, the distance from Earth to the Moon is _________. * small enough to fit within your hand * On a scale where the Sun is about the size of a grapefruit and the Earth is about 15 meters away, how far away are the nearest stars besides the Sun? * About the distance across the United States * The...
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...SENIOR SECONDARY COURSE PHYSICS 1 (CORE MODULES) Coordinators Dr. Oum Prakash Sharma Sh. R.S. Dass NATIONAL INSTITUTE OF OPEN SCHOOLING A-25, INSTITUTIONAL AREA, SECTOR-62, NOIDA-201301 (UP) COURSE DESIGN COMMITTEE CHAIRMAN Prof. S.C. Garg Former Pro-Vice Chancellor IGNOU, Maidan Garhi, Delhi MEMBERS Prof. A.R. Verma Former Director, National Physical Laboratory, Delhi, 160, Deepali Enclave Pitampura, Delhi-34 Dr. Naresh Kumar Reader (Rtd.) Deptt. of Physics Hindu College, D.U. Dr. Oum Prakash Sharma Asstt. Director (Academic) NIOS, Delhi Prof. L.S. Kothari Prof. of Physics (Retd.) Delhi University 71, Vaishali, Delhi-11008 Dr. Vajayshree Prof. of Physics IGNOU, Maidan Garhi Delhi Sh. R.S. Dass Vice Principal (Rtd.) BRMVB, Sr. Sec. School Lajpat Nagar, New Delhi-110024 Dr. G.S. Singh Prof. of Physics IIT Roorkee Sh. K.S. Upadhyaya Principal Jawahar Navodaya Vidyalaya Rohilla Mohammadabad (U.P.) Dr. V.B. Bhatia Prof. of Physics (Retd.) Delhi University 215, Sector-21, Faridabad COURSE DEVELOPMENT TEAM CHAIRMAN Prof. S.C. Garg Former Pro-Vice Chancellor IGNOU, Delhi MEMBERS Prof. V.B. Bhatia 215, Sector-21, Faridabad Prof. B.B. Tripathi Prof. of Physics (Retd.), IIT Delhi 9-A, Awadhpuri, Sarvodaya Nagar Lucknow-226016 Sh. K.S. Upadhyaya Principal Navodaya Vidyalaya Rohilla Mohammadabad, (U.P.) Dr. V.P. Shrivastava Reader (Physics) D.E.S.M., NCERT, Delhi EDITORS TEAM CHAIRMAN Prof. S.C. Garg Former Pro-Vice Chancellor IGNOU, Delhi MEMBERS Prof. B.B. Tripathi Prof...
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